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`No Model.) I i 2 Sheets-.Sheet 1.` i O. PIPER.

WARP STQP MOTIDN PoR LooMs. No.. 594,213! Patented Nov. 23,1897.

CD5 I (N o Model.) 2 Sheets-Sheet 2.

0. PIPER.' WAR? STOP MOTION FOR LOOMs.

No. 594,2l3. Patented NOV., 23,1897.

@l jl 60 a m mr @a u es' frvvevafr O Orr/'nfc/Jer @www UNITED STATES To all whom it may concern,.-

Be it known that I, ORIN PIPER, of Manchester, county of Hillsborough, State of New Hampshire, have invented an Improvement in Warp Stop-Motionsfor Looms, Aof which the following description, in connection with the accompanying drawings, is a speciiication, like letters on the drawings representing like parts.

This invention relates to warp stop-inotions for looms wherein the breakage or undue slackness of a warp-thread is effective through the operation of a warp-stop-motionactuating detector and suitable intervening 15 mechanism to release the usual shipper-lever and thereby stop the loom.- The detectors may be utilized as heddles, o'r they maybe used' entirely independent of the shedding mechanism of the loom, my invention being zo equally well adapted to either construction,

and I have herein shown both adaptations or embodiments of` my invention.

In some looms of well-known construction the reciprocating heddle-frame is provided 25 with a series of metallic heddles, each-having a warp-eye and a longitudinal opening through which the supporting bar is extended, the heddles having a limited vertical movement independently of the heddle- 3o frame.

the heddles in the lower plane of the shed are supported by their warp-threads; but should a warp break or unduly slacken its heddle will drop into abnormal position' to engage and 3 5 stop the movement of a normally rocking or vibrating feeler, such stoppage setting into operation devices for releasing the shipperlleyer. If the detectors do not also constitute hcddles, they will be mounted independently of the shedding mechanism, but they will cooperate with the feeler as before. Considerable trouble has been encountered in adjusting the movement ot' the vibrator or feeler, more particularly as regards the spring or 45 springs which have formed a .part of the connections between the feeler and the positivelydriven means for operating` it. If the adjustment of the spring makes it too strong, there is .great danger of bending or otherwise in- 5o juring the dropped detector or detectors, and

.IiVhen the loom is running properly,`

PATENT OFFICE.

ORIN PIPER,l OF MANCHESTER, NEV HAMPSHIRE, ASSIGNOR, BY MESNE ASSIGNMENTS, TO THE N ORTI-IROP LOOM COMPANY, OF SACO, MAINE, AND IIOIEDALE, MASSACHUSETTS.

WARP STOP-.MOTION FOR Looms'.

SPECIFICATION forming part of Letters Patent No. 594,213, dated November 28, 1897. Application filed November 20, 1896. Serial No. 612,790. (No model.)

if the spring is too light the releasing mechanism for the shipper-lever mayfail Itoact promptly or at all. In my present invention I have overcome these objectionable features y and have obviated the use of any spring or 55 yielding connection Whatever between the feeler and its vibratin g mechanism, whereby the operation of the stop-motion mechanism is rendered more positive and accurate without any ot the nicety of adjustment now ab- 6o solutely necessary to produce good work.

In accordance therewith my invention consists in various features to be fully described hereinafter and particularly pointed out'in the claims. v65

Figure 1, in yfront elevation and partly broken out, represents a suiiicient portion of a loom to be understood with my invention applied thereto, the detectors being utilized as heddles. thereof on the line :n Fig. 1, looking to the left. Fig. 3 is a similar view, the lay, however, being shown as fully back with the heddles in normal position, whereas in Fig..2 a heddle has dropped and the'layis on its backward 75 throw. Fig. 4 is a detail to be referred to. i Fig. 5, partiallyin section and elevation, represents a loom with the 'warp-stop-motion-actuating detectors mounted independently of the `shedding mechanism; and Fig. 6 is a par- 8o tial front elevation of the loom shown in Fig.

5, taken between the lay and the harness mechanism, with the latter omitted.

The loom-frame A, breast-beam'A', lay A2, lay-sword A3, the crank-shaft C, and the ship- 8 5 per -lever B, held normally in the usual notched Vplate B and controlling a suitable belt-shipper, (not showin) are and may be all as usual in looms.

The harness-frames consist each of a top 9o cross-bar a, Fig. l, bottom bar a', and rigidlyattached side bars d2, Figs. 1 and 2, said frames being connected by flexible bands or straps a3 with sheaves a4, fast on a rotatable shaft a5 above them. The usual harness 95 mechanism for actuating the frames to give them their reciprocating motion is omitted in the drawings i or the sake of clearness and inasmuch as such mechanism forms no part of this invention. A A

Fig. 2 is a partial sectional View 7 0 IOO In Figs. l, 2, and 3 the warp-stop-motionactuating detectors are utilized as a series of heddles b, preferably composed of thin flat strips of metal, and have each a warpeye b' andan enlarged slot 112 at or near its upper end to receive the supporting crossbar a, said bar being of less depth than the length of the slot b2. A plate c is extended across'the loom in front of and adjacent the vertical path of the front series of detector-heddles, as clearly shown in Figs. 2 and 3, and a second plate or bar c' parallel thereto is extended across the loom back ofand adj acent the path of the second or rearmost series of heddles, the two forming an open stationary guide, into which the lower ends of the detector-heddles enter loosely. A foot c2, having preferably a notched or milled edge c3, (see Fig. 4,) is secured to the bottom of the plate c to engage the front edge of a dropped heddle and prevent it from twisting when acted upon by the feeder.

A rock-shaft d is extended across the loom below the open guide, said shaft having fast thereon arms d', to which is bolted or otherwise secured a feeler, shown as a piece of angle-iron j", the overhanging flange thereof being preferably notched at j" along its edge. This fecler is normally swung or vibrated back and forth below the guide and below the lower ends of the heddles; but should a heddle drop, owing to breakage or slaekness of its warp-thread, as shown as bx, Figs. 1 and 2, the vibrator in its forward movement will be engaged and stopped thereby, as clearly shown in Fig. 2, the front part c of the guide engaging and holding the front edge of such dropped heddle. with a bent arml cl3, is shown as adj ustably secured to the rock-shaft d by a set-screw dx near the side of the loom at which the shipper-lever is located,l said arm d3 extending toward the front of the loom and having an enlarged end provided with a slot d4, and the arm is then bent laterally. A link d5 is pivoted at its upper end at d6 to the lateral bend of the arm to be thus pivotally connected eecentrically with the rock-shaft, and at its lower end it is longitudinally slotted at Z7 to be entered by a laterally-extended stud e on a stand e', rigidly secured to the lay-sword A3. The lilik di is preferably enlarged near its lower end or provided with a weight w to control the forward or operative movement of the feeler by gravity, and as the lay moves back and forth it will oscillate the link on its pivot c f. Owing to the curved path of movement of the stud e the link will be lifted as the lay moves forward and lowered as the lay moves back, the extreme position of the link and the lay when back being shown in Fig. 3. When the link is raised, it will act to rock the shaft (Z and positively swing the feeler f backward in the direction of arrow l0, Fig. 3, and when the link is lowered the shaft d will be rocked in the opposite direction by the weight of the link and its enlargement w, the

latter normally keeping the upper end of the 1 h2o are shown as A hub d2, provided slot di on the stud c. When, however, the feeler engages a dropped heddle, the morement of the rock-shaft is stopped, and then the link is merely swung on its pivot d, the

stud e moving in the slot di.'

A bell-crank lever 7L h. is pivoted at h2 on the loom-frame A, the arm h resting against the inner side of the shipper-lever 13, Figs. l and 2, the arm lt' being pivotally connected to a slide-rod h3, bent upwardly at its inner end lto enter and slide in a bearing h4 on the main frame. The slide-rod has an ear 71,, erected thereon near the bearing, to which is pivoted a dog k, adapted at times to be engaged by a cooperating bunter 7u', shown as rigidlysecured to a suitable part of the lay.

The position of the dog is controlled by and in accordance with the movement of the feeler f, and for this purpose a link k2 is pivoted on the dog and depends therefrom, the lower end of the link being longitudinally slotted at 7c3, adjacent the slotted end of the arm d3. Astud m, having a head or shoulder lm', is held in adjusted position in said slotted arm by a set-nut m2, the other end of the stud entering the slot 7c3 and bearing against its upper end. When the feeler fis swung fully forward, as in Fig. 3, meeting no obstruction, the weight of the link k2 will turn the dog 7.a down out of the path of the bunter, and when the feeler is swung in the opposite direction the dog will be turned up above the bunter 7c'. Should the feeler engage and be stopped by a dropped heddle in either series, however, as in Fig. 2, the stud m will be held by arm cl3 in such position that the dog k will be engaged by the bunter 7.a as the lay moves back, and as the lay completes such backward throw the bunter pushes the dog and the slide-rod h3 back, turning the bell- 4crank lever until its arm 7l, presses the shipper-lever out of its holding-notch', thereby stopping the loom, the bell-crank lever thus acting as a releasing device for the shipperlever. The4 slot 7a3 in the link 7a2 allows such rearward movement of the dog, the link being mowed thereby longitudinally and relatively to the stud fm.

The dog and the connections between it and the feelcr constitute controlling means for the shipper-lever-releasing device.

It will be observed that there is no spring or yielding device included in or forming a part of the connections between the feeler and the means to vibrate it, fsaidrfeeler being positively swung in one direction and in the other by gravity and that no nice adjustment is required, for it is only necessary that the vibrator swings through a proper arc and that such swing will normally move the dog outof the path of the bunter.

I have shown one convenient and simple form ofreleasing means for the shipper-lever controlled by the dog; but my invention is not restricted thereto.

Referring to Figs, 5 and 6, the detectors slotted at b21 to receive a IOO IIS

supporting-bar d20, secured to brackets B20 on the loom sides, a second slot 7922 in each detector receiving two warps, one in each shed, the detectors being mounted independently l of the harnesses I-I H', which may be of any usual construction, the detectors being vertically movable relative to the bar 0,20. Two plates or bars c and c', substantially the same as herein described, extend across the loom and form. the open stationary guide for the lower ends of the detectors, the plate c having preferably the milled-edge foot c2 to engage the front edge of a dropped detector.

The rock-shaft CZ, the arms d thereon, and the feelerf, bolted thereto and notched at'f, are as described, the feeler being normally swung or vibrated below the lower ends of the detectors, but being engaged and stopped by a dropped 'detector due to breakage or undue slackness of its warp-'thread in the upper plane of the shed. An arm cl3, fast on the rock-shaft, has pivotally connected thereto at (760 a link C, slotted or forked at d70, to be entered by the stud e on the stand e', secured to the lay-sword A3, as before described, the link having near its end an enlarged or Weighted portion w20. As the lay moves forward the link is lifted and lowered as the lay moves back, rocking the shaft CZ and swinging the feelerfback and forth except when a dropped detector is' engaged by-tlie feeler, the operation being practically the same as described when the detectors are utilized as heddles. The bell-crank lever 71. 71.', the sliderod 72,3, bent to slide in a bearing 71.'VL on the main frame, and the ear 715 on the slide-rod, having a pivoted dog 7c to be at times engaged by the cooperating bunter k', rigidly attached to the lay, are substantially as before described.

In Figs. 5 and the dog 7c has pivoted thereto a link 7020, depending therefrom and slotted at 71:30, to be entered by a stud 'mm on an arm m12, fast on the rock-shaft d, so that when the feeler f is swung fullyiorward the arm 11312 will descend, permitting the weight of the link 7929 to depress the dog 7c out of the path of the bunter, and when the feeler is swung in the opposite direction the dog will be turned up above the bunter. If the feeler engages and is stopped by a dropped detector,

- the rock-shaft CZ will be held so that the link 7a2@ cannotdepress the dog, and the bunter will engage it as the lay completes its back-v ward. throw, acting through the slide-rod 71,3 to release the shipper-lever and stop the loom.

Having fully described my invention, what I claim, and desire tOsecur-e by Letters Patent, is

l. In a loom, the lay, a series of warp-stopmotioiractuating detectors thereof and adapted to drop into operative position upon failure of the warp-threads, a vibrating feeler mounted in stationary bearings independent of the lay, a weight operatively connected with and to move said feeler toward and to be stopped by engageindependentl tionary guide for the lower ends of the detectors, a vibrating feeler mounted independent of the lay, a weight connected with said feeler to move it by gravity toward and to engage and be stopped by a dropped detector, means connected with the lay to positively rock the feeler in the opposite direction or away from the detectors, stopping mechanism for the loom, and connections between it and the feeler, substantialiyas described.

3. In a loom, the lay, a series of metallic warp-stop-motion-actuating detectors adapted to slide vertically and controlled by the warp-threads, a stationary guide for the lower ends of the detectors, a feelerjnounted independent of the lay,a connected weight to move the feeler by gravity toward and to engage a dropped detectoi` due to breakage or undue slackness of its warp-thread, means, including a link, positively oscillated by the lay, to

retract the feeler from the path of movement of the detectors, and stopping mechanism for the loom, operative upon stoppage of the feeler by a dropped detector, substantially as described.

4. In a loom, the lay, a heddle-frame provided with a cross-bar, and a series of metallic heddles adapted to slide vertically on and independently'of said bar, and a stationary guide for the lower ends of the heddles, combinedvwitli a rock-shaft independent of the lay, a feeler vibrated thereby to engage the end of a detector in abnormal position due to breakage or undue slackness of its warpthread, a depending longitudinally-slotted link pivotally connected eccentrically to said rock-shaft, to rock the latter toward the heddles by its weight, a reciprocating actuator for the link, mounted on the lay and entering the longitudinal slot, whereby the link will be oscillated and moved longitudinally against its weight,'such longitudinal movement positively rocking the shaft to move thefeeler away from the heddles, stopping mechanism for the loom, and connections between said mechanism and the feeler, substantially as described.

' 5. In a loom, the lay, a cross-bar, and a series of longitudinally-slotted metallic warpdetectors adapted to slide vertically on and independently of said bar, a vibratable feeler mounted independently of the lay, to engage a dropped detector, a depending weighted link pivoted eccentrically to said vibrator, and having a longitudinal opening therein, a lug movable with the lay, to enter said openin'g, whereby said link will be oscillated and IOO moved upward to retract the feeler on one stroke of the lay, the Weight of the link depressing it and moving the feeler toward the path of the detectors on the other strokeof the lay, and stopping mechanism forthe loom, operative upon stoppage of the feeler by av dropped detector, substantially as described.

G. Ina loom, the lay, a heddle-frame provided With a cross-bar, and a series of metallic heddles adaptedv to slide vertically on and independently of said bar, combined with a feeler mounted independent of the lay and heddle-frame, a connected weight to move it toward and toen gage a dropped hedd1e,means to positively retract ,said feeler, a shipperlever, a releasin g device therefor, a controller for said device, renderedbperative by stoppage of the feeler, and actuating connections between said controller and the feeler, sn'bstantially as described.

7. In a loom, the lay, a heddleframe provided With a cross-bar, and a series of metallic hcddles adapted to slide verticallyV on and independently of said bar, combined with a stationary guide for the lower ends of the heddles, a gravity-actuated, vibratable feeler mounted independently of the r'y, to engage a dropped he'ddle, means operated by movement of the la-y to retract. the feeler positively, and stopping mechanism for the loom, including a dog and a cooperating bunter, and a connection between the dog and feeler, whereby the former is placed in operative position by stoppage of the feelerlsubstantially as described. A

8. In a loom, the lay, a series of warp-stopmotion-actuating detectors having a vertical movement controlled by the Warp-threads, combined with a reciprocating feeler independent of the'lay, a Weight connected with the feeler tp' move it by gravity toward and to engage a detector dropped by breakage or slacknes's of ,its'warp-thread, means actuated bythe lay to retract the feeler positively, and stopping mechanism for the loom, operative upon stoppage of the feeler by a dropped detector, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of twcr subscribing witnesses.

ORIN PIPER. Vitncsses:

A. XV. BIORGAN, EDWIN F. JONES. 

